elasticsearch/elasticsearch — pull request #3966 by spinscale (2013-10-24 14:49:00+00:00)
Title: Add version to prebuilt analyzers

This patch takes the version of the created index into account when a
prebuilt analyzer is created.
So, if an index was created with 0.90.4, then the prebuilt analyzers
will be the same than on the 0.90.4 release.

One reason for this feature is the possibility to change pre built
analyzers like the standard one.

The patch tries to reuse analyzers as mutch as possible. So even if
version X.Y.Z and X.Y.A use the same lucene analyzers, the same instance
is reused in order to prevent overcreation of lucene analyzer instances.

Closes #3790